553 







FILTER- 



PAPER CATCHES, 



ILLINOIS 



RIVER — 



Contimti 



:d. 





in 



a u 







i_-o 



J3 





"0 OjO 



£>„ 



1 E 



t; 



■«^p 





OJ 





re 

 u 



3 6 



5c? 



■w g 



■ — ' 1_ 



-C c 



in C 



■" 5 



U 3 



u a 







re — 

 .-^ re 



t/3 



"re 

 



re <l> 



& 



^stirr 

 erce 



of s 





2 a 



O O 



2m 



(J m 



< 









H 



E-i 



W P~ 





H ~ 









1898 

















22,649 d 



11 



I. 



IOOO 



■05 



5° 



99.70 



49.85 



•15 



0.07 



22,651 d 



21 



I. 



1000 



.06 



60 



99.90 



59-94 



.06 



0.8l 



22,654 d 



25 



1. 



1000 



.16 



160 



99.50 



159.20 



.80 



O.47 



22,656 d 



3 



II. 



IOCO 



•°3 



30 



98.00 



29.40 



.60 



O.67 



22,658 d 



8 



II. 



1000 



.08 



80 



99.00 



79.20 



.80 



0.28 



22,660 d 



15 



II. 



IOOO 



12 



120 



99.50 



119.40 



.60 



0.04 



22,663 d 



22 



II. 



1000 



.41 



410 



99.99 



409.96 



.04 



0. 10 



22,665 d 



1 



III. 



IOOO 



•04 



40 



99.90 



39-96 



.04 



0.02 



22,669 d 



8 



III. 



IOOO 



.04 



40 



99.90 



39-96 



• 04 



0.06 



22,671 d 



15 



III. 



IOOO 



•05 



So 



99.50 



49-75 



•25 



O.38 



22,674 d 



22 



III. 



IOOO 



•°s 



50 



99.20 



49.50 



■50 



O.77 



22,676 d 



29 



III. 



IOOO 



•04 



40 



99.80 



39-92 



.08 



0-43 



22,680 d 



5 



IV. 



IOOO 



.04 



40 



99.80 



39-92 



.08 



0-53 



22,682 d 



12 



IV. 



IOOO 



•03 



30 



99.20 



29.76 



-24 



0.13 



22,685 d 



19 



IV. 



IOOO 



•04 



40 



93.00 



37.20 



2.80 



1. 12 



22,693 d 



26 



IV. 



1000 



.06 



60 



45.00 



27.00 



33-oo 



I5.8I 



22,696 d 



3 



V. 



IOOO 



■07 



70 



35.00 



24.50 



45-5o 



35-68 



22,697 d 



10 



V. 



5000 



.08 



16 



30.00 



4.80 



11.20 



10.31 



22,702 d 



17 



V. 



IOOO 



.08 



80 



60.00 



48.00 



32.00 



5.22 



22,705 d 



24 



V. 



IOOO 



.12 



120 



95.00 



114.00 



6.00 



3-45 



22,711 d 



3i 



V. 



IOOO 



.08 



80 



92.00 



73.60 



6.40 



1.84 



22,715 d 



7 



VI. 



I coo 



.04 



40 



90.00 



36.00 



4.00 



5.28 



22,716 d 



14 



VI. 



IOOO 



■03 



30 



94.00 



28.20 



1.80 



6.99 



22,721 d 



21 



VI. 



IOOO 



.07 



70 



85.00 



59-50 



10.50 



2.88 



22,723 d 



28 



, VI. 



IOOO 



.08 



80 



85.00 



68.00 



12.00 



0.69 



22,725 d 



5 



VII. 



1000 



.07 



70 



96.00 



67.20 



2.80 



0. 14 



22,730 d 



12 



VII. 



IOOO 



■05 



50 



96.00 



48.00 



2. CO 



0.64 



22,733 d 



19 



VII. 



IOOO 



.05 



50 



92.00 



46.00 



4.00 



0.88 



22,737 ' 



26 



VII. 



IOOO 



.06 



6c 



30.00 



18.00 



42.00 



0.67 



22,749 d 



2 



VIII. 



IOOO 



.04 



40 



94.00 



37.60 



2.40 



1.62 



22,763 d 



9 



VIII. 



IOOO 



.08 



80 



80.00 



64.00 



16.00 



0.97 



22,765 d 



16 



VIII. 



IOOO 



■05 



50 



92.00 



46.00 



4.00 



0.61 



22,768 d 



23 



VIII. 



IOOO 



.06 



60 



94.00 



56.40 



3-6o 



0.51 



22,770 d 



30 



VIII. 



IOOO 



.04 



40 



93.00 



37.20 



2.80 



0.82 



22,773 d 



6 



IX. 



I COO 



.06 



60 



97.00 



58.20 



1.80 



0.90 



22,777 d 



13. 



IX. 



IOOO 



.07 



70 



98.50 



68.95 



1.05 



0.61 



22,780 d 



20, 



IX. 



IOOO 



.06 



60 



99.00 



59.40 



.60 



0.95 



22,782 d 



27, 



IX. 



IOOO 



.06 



60 



92.00 



55.20 



4.80 



0.31 



22,785 d 



4, 



X. 



IOOO 



.04 



40 



95.00 



38.00 



2.00 



0.17 



22,788 d 



n> 



X. 



IOOO 



.07 



70 



99.50 



69.65 



■35 



0.22 



22,791 d 



18, 



X. 



IOOO 



•03 



30 



99.00 



29.70 



•3° 



0.42 



22,793 d • 



25- 



X. 



1000 



.08 



80 



99.70 



79.76 



.24 



0. 16 



22,795 d 



1, 



XI. 



IOOO 



.11 



no 



99.90 



109.89 



.11 



0.14 



22,799 e 



8, 



XI. 



IOOO 



.08 



80 



99.80 



79.84 



.16 



0.04 



22,802 d 



15, 



XI. 



IOOO 



. 12 



120 



99-95 



119.94 



.06 



0. 10 



22,804 d 



22, 



XI. 



IOOO 



.20 



200 



99.99 



199.98 



.02 



0.22 



22,807 d 



29. 



XI. 



IOOO 



• 04 



40 



95.00 



38.00 



2.00 



0-75 



22,809 d 



6, 



XII. 



IOOO 



•03 



30 



93.00 



27.90 



2. 10 



1.26 



22,813 c 



13, 



XII. 



IOOO 



.04 



40 



85.00 



33-oo 



7.00 



0.01 



22,814 d 



15. 



XII. 



IOOO 



•03 



30 



65.00 



19.50 



10.50 



0.58 



22,816 d 



20, 



XII. 



1000 



.04 



40 



85.00 



34.00 



6.00 



1.98 



22,819 d 



27, 



XII. 



IOOO 



.02 



20 



75.00 



15.00 



5.00 



1 .06 









Average 











5.64 



2.13 













